HolyMan
Thy wounds are healed!
A good starting point is the grandmother policy which applies on the boards in general. Historically, this comes from the policy which Eric Noah put in place on his boards. In summary, people were expected to use the sort of language they might use if Eric's grandma was present.
Oh your right didn't even think in that direction OPPS!! I always keep it clean.
The same thing would apply to romantic involvement during play. Keep it grandma-friendly (bearing in mind, too, that there are no age restrictions on membership of ENWorld, and the object of your virtual affections may, in fact, be 12 years old!)
Something else I didn't think of I think I 'll make gear all my affections towards NPC's of my own. LOL
Romantic interest has been expressed between PCs before now, and that's a reasonable part of the roleplay between characters - just make sure that any intimate details happen off-stage, and in private.
Like the fantasy novels paragraph A they are in each others arms kissing madly. Paragraph B they are waking up next to each other. don't need all that inbetween stuff like in the romance novels YUCK!!

HM